/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.intellij.stripes.reference.providers;

import com.intellij.ide.IconProvider;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiModifier;
import com.intellij.psi.jsp.JspFile;
import org.intellij.stripes.facet.StripesFacet;
import org.intellij.stripes.util.StripesConstants;
import org.intellij.stripes.util.StripesUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;

/**
 * Created by IntelliJ IDEA.
 * User: Mario Arias
 * Date: 4/01/2009
 * Time: 09:32:06 PM
 */
public class StripesIconProvider extends IconProvider {
// -------------------------- OTHER METHODS --------------------------

	@Nullable
	public Icon getIcon(@NotNull PsiElement element, int flags) {
		StripesFacet facet = StripesUtil.getStripesFacet(StripesUtil.getModule(element));
		if (facet == null) {
			return null;
		}
		//Change Icons?
		if (facet.getConfiguration().isChangeIcons()) {
			//is JSP's?
			if (element instanceof JspFile && StripesUtil.isStripesPage(element)) {//get tags like page, taglib...
				return StripesConstants.STRIPES_JSP_ICON;
			} else if (element instanceof PsiClass) { //is class?
				PsiClass clazz = (PsiClass) element;
				boolean isActionBean = false;
				try {
					//is abstract?
					if (!clazz.getModifierList().hasExplicitModifier(PsiModifier.ABSTRACT)) {
						//Is an implementation of ActionBean?
						isActionBean = StripesUtil.isSubclass(element.getProject(), StripesConstants.ACTION_BEAN, clazz);
					}
				} catch (Exception e) {
					//
				}
				return isActionBean ? StripesConstants.ACTION_BEAN_ICON : null;
			} else {
				return null;
			}
		}

		return null;
	}
}
